POWER ENGINEERING 3B2 - CHAPTER
4 EXAM QUESTIONS AND ANSWERS.
VERIFIED 2026.
The gas turbine system is:
a. Ideal for large generator systems
b. Ideal to be used over a steam turbine
c. Ideal to be used for unmanned and remote locations
d. Ideal for all applications of a process plant
e. Ideal for large gas plant - ANS C
Gas turbines are used in industry as prime movers for:
1) Power generators
2) Large pumps
3) Gas compressors
4) Emergency equipment
a. 1, 2, 3
b. 1, 2, 4
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,c. 1, 3, 4
d. 1, 2, 3, 4
e. 2, 3, 4 - ANS D
Gas turbines are used in large power plants to provide almost instant emergency power for:
a. Peak load shaving
b. High heating load
c. Water pumps
d. Exit lighting
e. Essential services - ANS A - Possibly E
Some of the characteristics which make the gas turbine a better choice over other prime movers
are:
1) Low maintenance
2) Minimum cooling water required
3) High thermal efficiency
4) Rapid start up and loading
a. 1, 2, 3
b. 1, 2, 4
c. 1, 3, 4
d. 2, 3, 4
e. 1, 2, 3, 4 - ANS B
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Gas turbines are far superior to other types of engines in their:
a. Fuel consumption
b. Efficiency
c. Lubricating oil consumption
d. Power per mass ratio
e. Fuel usage - ANS D
A closed cycle gas turbine system:
a. Does not use a starting motor
b. Has lower pressure used in system
c. Will use the same working fluid over again
d. Must use a cooler before the regeneration
e. Has a lower initial cost than that of the open cycle gas turbine - ANS C
The compressor on a gas turbine:
a. Can be driven by the load turbine
b. Is always of the axial type
c. Is always a multi-stage compressor
d. Can be of the reciprocating type
e. Is always of the centrifugal type - ANS A
In a dual shaft gas turbine arrangement:
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, a. The load turbine is down stream from the compressor turbine
b. The load turbine drives the prop on a turbo prop engine
c. Is always used in an open cycle
d. System flexibility is reduced
e. A larger starting motor is required - ANS A
The High Pressure turbine drives the compressor
The starter motor can be smaller because it's only turning the compressor and the HP turbine
The advantages of a dual shaft gas turbine arrangement are:
1) Greater flexibility
2) It is cheaper
3) Smaller starting motor may be used
4) High pressures and temperatures may be obtained
a. 1, 2
b. 1, 3
c. 2, 3
d. 2, 4
e. 1, 4 - ANS B
Greater operating flexibility because the load may be operated at varying speeds while the
compressor speed remains constant
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
4 EXAM QUESTIONS AND ANSWERS.
VERIFIED 2026.
The gas turbine system is:
a. Ideal for large generator systems
b. Ideal to be used over a steam turbine
c. Ideal to be used for unmanned and remote locations
d. Ideal for all applications of a process plant
e. Ideal for large gas plant - ANS C
Gas turbines are used in industry as prime movers for:
1) Power generators
2) Large pumps
3) Gas compressors
4) Emergency equipment
a. 1, 2, 3
b. 1, 2, 4
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,c. 1, 3, 4
d. 1, 2, 3, 4
e. 2, 3, 4 - ANS D
Gas turbines are used in large power plants to provide almost instant emergency power for:
a. Peak load shaving
b. High heating load
c. Water pumps
d. Exit lighting
e. Essential services - ANS A - Possibly E
Some of the characteristics which make the gas turbine a better choice over other prime movers
are:
1) Low maintenance
2) Minimum cooling water required
3) High thermal efficiency
4) Rapid start up and loading
a. 1, 2, 3
b. 1, 2, 4
c. 1, 3, 4
d. 2, 3, 4
e. 1, 2, 3, 4 - ANS B
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Gas turbines are far superior to other types of engines in their:
a. Fuel consumption
b. Efficiency
c. Lubricating oil consumption
d. Power per mass ratio
e. Fuel usage - ANS D
A closed cycle gas turbine system:
a. Does not use a starting motor
b. Has lower pressure used in system
c. Will use the same working fluid over again
d. Must use a cooler before the regeneration
e. Has a lower initial cost than that of the open cycle gas turbine - ANS C
The compressor on a gas turbine:
a. Can be driven by the load turbine
b. Is always of the axial type
c. Is always a multi-stage compressor
d. Can be of the reciprocating type
e. Is always of the centrifugal type - ANS A
In a dual shaft gas turbine arrangement:
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, a. The load turbine is down stream from the compressor turbine
b. The load turbine drives the prop on a turbo prop engine
c. Is always used in an open cycle
d. System flexibility is reduced
e. A larger starting motor is required - ANS A
The High Pressure turbine drives the compressor
The starter motor can be smaller because it's only turning the compressor and the HP turbine
The advantages of a dual shaft gas turbine arrangement are:
1) Greater flexibility
2) It is cheaper
3) Smaller starting motor may be used
4) High pressures and temperatures may be obtained
a. 1, 2
b. 1, 3
c. 2, 3
d. 2, 4
e. 1, 4 - ANS B
Greater operating flexibility because the load may be operated at varying speeds while the
compressor speed remains constant
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
